Boring or drilling machine.



PATENTED DEG. 10, 1907.

' W. TOPHAM. BORING OR DRILLING MAGHINE.

APPLICATION FILED SEPT. 7.1905.

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MM ww w PATENTED DEC. 10. 1907.

W. TOPHAM. BORING 0R DRILLING MACHINE.

APPLICATION FILED SEPT. 7.1905.

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Witnesses.- v giffl flw UNTTED STATES PATENT canoe WILLIAM TOPHAM, OF WESTVILLE, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO JOSEPH BARTON, ONE-FOURTH TO JOHN BARTON, AND ONEFOURTI-I TO WILLIAM TOPIIAM, JR. OF WEST- VILLE, ILLINOIS.

BORING OR DRILLING MACHINE.

Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed September 7. 1905. Serial No. 277,363.

To all whom it may concern:

Be it known that I, WILLIAM ToPnAn, a citizen of the United States, residing at WVestville, in the county of Vermilion and the State of Illinois, having invented a new and useful Coal-Drilling Machine, of which the following is a specification.

This invention relates to improvements in boring or drilling machines more especially for drilling coal as in mines. Its objects are, among other things, to provide for readily adjusting the boring or drilling tool at any desired angle according to the different stages of the progress of the drilling operation; to effect the suitable bracing of the machine and to prevent the wabbling of the same and to carry out these objects in a simple, expeditious and effective manner.

Said invention consists of certain features or instrumentalities substantially as hereinafter fully disclosed and particularly pointed out by the claims.

In the accom anying drawing illustrating the preferred em odiment of my invention Figure 1 is a side elevation thereof. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a side elevation of the support or carriage for the tool-carrying screw-threaded shaft or mandrel. Fig. 4 is a broken underside view of the rack or base-bar. Fig. 5 is a vertical transverse section thereof produced through the same near its forward or inner end. Fig. 6 is a horizontal or transverse section taken through the tool shaft support or carriage viewing downward. Fig. 7 is an opposite side elevation of the device from that disclosed by Fig. 1; Fig. 8 is a horizontal section of the nut or sleeve, and Fig. 9 is a plan view of the gearing for actuating the tool carrying shaft or mandrel. Fig. 10 is a detailed section clearly illustrating the clamping action of the set-screw e.

In the disclosure of my invention, I em ploy a base or grip bar E having upon its underside, near the extreme forward end, op osite longitudinal ribs d and a lug 9 resu ting from upward recessing or dishing said underside as at M, for aiding the retention thereof in fixed position by forcing said ribs and lug into the coal-surface, which are also effective to prevent the wabbling or lateral movement thereof and accordingly of the machine. A carriage or support for the tool carrying screw-shaft or mandrel B composed of two members or sections P, P, is

said sleeve.

superposed with relation to a sleeve or slide L arranged upon the base or grip bar E. A screw-bolt b is passed through the bottom portion of one of the members of the carriage or support and is fitted with a nut, above said bottom, said bolt having its head let into a recess in the lowersurface of the upper portion of the sleeve or slide L, thus serving for the suitable retention of the carriage upon said grip or basebar.

The sections or members of the carriage P, P are provided with engaging vertical slots and ribs or projections O, N, respectively, to allow of the vertical adjustment of one with relation to the other as for the corresponding adjustment of the tool-carrying shaft mandrel or screw, presently made more fully apparent, as in accommodating the latter to the work in hand. Said sleeve or slide L is equipped with a pivoted claw or detent K for engagement with any one of the notches a in the base or grip-bar E for the suitable bracing of said slide with the carriage P, P in position as against rearward displacement when the machine is in use. Said sleeve or slide is also provided with a set or holding screw f for aiding its retention in position upon said grip-bar.

A bearing or boxing 0 provided with a screw-threaded sleeve R, R for the reception of the tool carrying screw-shaft or mandrel B, and accordingly providing for the suitable movement through said sleeve of said screw or shaft, is composed of two suitably articulated or pivoted together members or sections; also held together at their otherwise free opposite edges by a rod is. Said screw-threaded sleeve is suitably held in place within the box C by nut-equipped screw-bolts 0 passed through said box and These members or sections are also provided with lateral trunnion-like studs Q bearing in slotted openings 'i formed in the lateral portions of the carriage P, P near their upper ends, to provide for the movement of the tool-carrying shaft or screw in an arc the purpose of which is ap parent. For the suitable retention or fixing of the bearing or box O in working position,

the latter is provided with a set or holding screw e effective to engage or bind upon the adjustable carriage-section for its retention at the required point of adjustment.

Suitably splined upon the screw-shaft B as presently explained is an oppositely facing double bevel-gear F with which engages a bevel-gear or pinion G whose shaft I is suitably journaled in a sleeve V fixed to a bracket S integral with the lower member or section of the boxing C. Said shaft I is adapted to have applied thereto a handle or crank H for the suitable actuation of said gearing and the consequent feeding forward of the tool-carrying screw or mandrel B as in effecting the drilling or boring operation, said handle being held in place by a nut J. Said vscrew or mandrel B has a lateral longitudinal groove h with which engages an in ward-projecting'feather or spline C of the gear 1* and whereby as said screw or mandrel is actuated by suitably manipulating the handle or crank H, it, said screw or mandrel will be allowed to be driven forward.

A nut J is suitably screwed. upon the outer end of the mandrel or shaft B to provide for the application of a handle (not shown) thereto as at I.

This machine is highly eifective for'its intended purpose, relatively simple and readily operated, as well as comparatively inexpensive of manufacture.

1. A machine of the character described, comprising a notched grip or base-bar, a carriage for a tool-carrying screw or mandrel and a slide or sleeve having a recess in the underside of its upper portion and having said carriage connected thereto said slide or sleeve also being provided with a detent engaging the notches of said grip-bar, and with a securing bolt having its head let into said recess, said bolt passing through an .posed of two members or sections having engaging vertical grooves and ribs, respectively, a tool-carrying mandrel or screw, means for supporting said screw or mandrel, carried by one of said sections or members, and means for fixing said sections or members in fixed relation.

4. A machine of the character described, comprising a carriage composed of two members or sections adjustable one with relation to the other, means for their retention in relatively fixed position, a toolcarrying screw or mandrel and means for supporting said screw or mandrel, carried by one of said sections or members.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM TOPHAM.

Witnesses:

En. F. NICHOLS, Tnos. J. FORD. 

